EP1593345A1 - Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine - Google Patents

Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine Download PDF

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Publication number
EP1593345A1
EP1593345A1 EP04010870A EP04010870A EP1593345A1 EP 1593345 A1 EP1593345 A1 EP 1593345A1 EP 04010870 A EP04010870 A EP 04010870A EP 04010870 A EP04010870 A EP 04010870A EP 1593345 A1 EP1593345 A1 EP 1593345A1
Authority
EP
European Patent Office
Prior art keywords
urine
hose
pump
measuring chamber
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04010870A
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German (de)
English (en)
Other versions
EP1593345B1 (fr
Inventor
Michael Pelster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Transmed Medizintechnik GmbH and Co KG
Original Assignee
Transmed Medizintechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transmed Medizintechnik GmbH and Co KG filed Critical Transmed Medizintechnik GmbH and Co KG
Priority to DE502004002955T priority Critical patent/DE502004002955D1/de
Priority to ES04010870T priority patent/ES2282754T3/es
Priority to EP04010870A priority patent/EP1593345B1/fr
Priority to DK04010870T priority patent/DK1593345T3/da
Priority to AT04010870T priority patent/ATE354311T1/de
Priority to US11/126,384 priority patent/US20050247121A1/en
Publication of EP1593345A1 publication Critical patent/EP1593345A1/fr
Application granted granted Critical
Publication of EP1593345B1 publication Critical patent/EP1593345B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/125—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements of the peristaltic pump type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/20—Measuring for diagnostic purposes; Identification of persons for measuring urological functions restricted to the evaluation of the urinary system
    • A61B5/207—Sensing devices adapted to collect urine
    • A61B5/208—Sensing devices adapted to collect urine adapted to determine urine quantity, e.g. flow, volume
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels

Definitions

  • the invention relates to a device for automatic monitoring of the flow an irregularly exiting liquid, in particular of a Catheter emerging urine flow, according to the characteristics of the generic term of the Claim.
  • Non-electrical measuring systems include such a determination the measuring cup principle. Doing so, the volume is scaled into a Plastic measuring cup of flowing urine read by the nursing staff and then the urine completely into a disposable collection bag connected to the measuring cup decanted.
  • Level gauge known in which by capacitance measurement or by Weighing the level of urine is determined in a measuring chamber.
  • Weight determination is problematic, however, that the density of urine in part varies considerably (1.002 to 1.06 g / ml). This is conditioned in particular by Solid bodies such as blood clots or fat stones that are flushed out with urine. From a pure weight measurement of the urine can thus not faultless the volume of urine will be closed.
  • the supply hose between the urine catheter and the measuring system is usually at least partially horizontal on the patient bed, so that The urine accumulates in the hose and flows into the measuring system in batches.
  • a conventional supply hose with an inner diameter of about 7 mm and a length of 1.2 m holds up to 46 ml of urine.
  • large urine volumes can be very quickly pour into the measuring system in a surge.
  • the entire bed surface of the patient bed is forward or tilted backwards.
  • the measuring system connected to the bed then decreases also an oblique position, which may be negative on the measurement accuracy effect.
  • the measuring system is at the patient's bed, usually laterally in the foot area, attached to the frame. Since patients are sometimes extremely close stored to the ground, the resulting height dimension is this known Systems problematic.
  • urine forms deposits on all contact surfaces (hoses, collection containers Etc.).
  • electrodes as in DE 34 11 449 A1, in a collection container introduced to determine the level by the contact with the urine, Over time, the urine and the electrodes may become high impedance Layer of urine deposits that cause impairment or repeal the measuring function leads. Also, parts of the measuring system can work in the course the volume measurement must be moved while contact with urine, be restricted or disturbed in their mobility.
  • the invention has the object, a generic Further develop device in that the device has a specific Height does not exceed, is easy to handle and no potential hazards in use.
  • this object is achieved in that on the one hand, the measuring chamber laterally next to the collecting container in about the same height with this is arranged.
  • the measuring chamber is provided with a riser. This is open at the bottom to the liquid in the measuring chamber and at the top with a mouth opening into the collecting container Hose connected, with the hose between the top Riser end and the collection container arranged peristaltic pump passes through.
  • the measuring chamber is therefore not arranged above the collecting bag, but next to this, i. laterally or optionally behind it. In this way corresponds the maximum height of the collector the height of a simple The urine collection bag system.
  • the device can therefore also at low stored patients are well arranged. With a lateral side arrangement The maximum depth of the measuring system results from the dimensions of one filled collection bag. There is no limit to the width of the measuring system specified.
  • Measuring chamber there is a simplified handling. All entrances and exits of Measuring chamber are located in the upper area of the measuring chamber. This can the measuring chamber like a kind of "cartridge" easily in a specially shaped opening be introduced in the housing of the control unit and locked there.
  • the effluents from the buffer reservoir of the measurement chamber i. of the an overflow hose and the pump hose, be positioned such that a Swapping the hoses is impossible.
  • a hose adapter for the Pump hose can be advantageously aligned so that the Pump hose is located directly in front of the entrance of the pump head and for the User thus, it is obvious that this hose in the peristaltic pump is to insert.
  • the proposed device provides protection against interference on the measuring sensors.
  • the measuring chamber recording in the Housing the control unit be designed so that this recording only has an opening at the top for insertion of the measuring chamber.
  • sensitive measuring sensors for Urine air detection can thus be surrounded by the measuring chamber Shield walls against interference (light, electromagnetic fields, etc.).
  • the invention achieves a cost reduction.
  • the tubing, the for the pump hose should be used high quality, as it has to meet complex requirements.
  • Reason for this is that the delivery constant over the entire period of use of the hose (to to 14 days in continuous operation) must be constant. This assumes that the Hose is dimensionally stable as well as elastic. Will he be between Pump head wall and pump roller squeezed, he must be strong can deform. If the pump roller continues to rotate, it must be replaced immediately expand to its original cross-section. In addition, it must be ruled out that urine deposits on the inner surfaces and the inner diameter reduced. It is recommended to use silicone tubing for such applications the silicone by mixing certain ingredients, for Example platinum, is refined. The inner surface is also, for example, with Teflon coated to prevent adhesion of urine.
  • a second level in the buffer reservoir the measuring chamber detected by means of an additional level sensor become. This is positioned at a higher level, for example 20 ml to 3ml. The level is then kept constant at this higher level.
  • the buffer reservoir can advantageously be made colorless and transparent be. Then the urine can be tested in color and consistency (visual inspection).
  • the Buffer reservoir to the lower level mark (3 ml) are pumped to the Specify excreted urine volume per hour exactly.
  • the device is with a pump head formed with a raised and lowered pump head wall.
  • the pump hose can be flexibly inserted into the pump head and remove again.
  • the device according to the invention or the measuring system consists of a control device 1 or a control unit and a consumable or collecting device 2.
  • the consumable 2 consists of the main elements Measuring chamber 3, pump hose 4 and a collecting container 5 or collecting bag together.
  • an overflow hose 6 can additionally be provided, which connects the measuring chamber 3 directly to the collecting bag 5.
  • the measuring chamber 3 is composed of the partial components drip chamber 7 and buffer reservoir 8. At the front end of a supply hose 9, a catheter coupling for connection to a urinary catheter is attached (not shown in Fig. 1). The urine inlet from the catheter is indicated by the arrow P 1 .
  • the consumable article 2 is fastened to the control device 2 or the control device, which essentially contains the functional elements peristaltic pump 10 and sensor system for the urine / air recognition 11.
  • the hose pump 10 consists of a drive unit (motor-gear unit), a pump head 12 and an encoder for monitoring the rotational movement together.
  • the pump head 12 consists of FIG. 2 a movable outer Pumpenkopfwandung 13 and a rotor 14. Der Rotor 14 is rotatably mounted centrally and is driven by the drive unit. At a distance of 90 ° pump rollers 15 are rotatably mounted on the rotor 14.
  • the pump head wall 13 can be moved by means of parallel guide by hand in the "open” position.
  • the direction of movement of the pump head wall 13 is designated by P 3 .
  • the pump hose 4 can be easily removed or inserted from the pump head 12. If the pump head wall 13 is moved with the hose 4 inserted into the "closed” position, the pump head wall 13 locks into its end position. As a result, the pump hose 4 is squeezed air-tight and watertight between at least one pump head roller 15 and the pump head wall 13.
  • the rotational movement of the pump head 12 is detected in 180 ° increments.
  • delivery constant k 0.90 ml / 180 °.
  • the pumphead 12 When the pumphead 12 is set in motion, the rotational movement can not be stopped until a full 180 ° rotation has been completed.
  • the pump head starts and ends exclusively in 2 rotational positions, which are offset by 180 °.
  • the delivered urine volume is basically an integer multiple of the delivery constant k.
  • P 4 the urine inlet from the buffer reservoir 8, P 5, the urine flow to the collecting bag 5 is designated.
  • the riser 16 An essential part of the buffer reservoir 8 is the riser 16, the bottom or at its lower end is open to the bottom of the buffer reservoir 8 the Urine pumping, and the upper end in a hose adapter 17 passes over (see Fig. 1). On the hose adapter 17, if necessary as 90 ° bend is executed, the pump hose 4 is fixed, in turn, at the entrance to Collecting bag 5 ends.
  • the riser 16 can both inside the Buffer reservoirs 8 used as well as from the outside firmly on the buffer reservoir. 8 to be appropriate. In the embodiment shown, to which the invention is not is limited, the riser 16 is facing to the collecting container Side disposed inside the reservoir 8.
  • an overflow hose 6 which in case of inadmissible accumulation of urine in the buffer reservoir 8 ensures the direct urine drain into the collection bag 5.
  • the sensor 11 for the level measurement in the buffer reservoir 8 is designed such that for the clear detection of urine or air neither a direct contact there is still direct contact with the buffer reservoir 8 for these media got to. It is firmly mounted on the control unit 1 and has a defined position for Buffer reservoir 8. Either it is a sensor from one side (groping) urine or detected air, or a sensor unit consisting of transmitter and receiver and works according to the light barrier principle. Sender and receiver are in visual contact, the buffer reservoir 8 is in between.
  • a Laser diode in the transmitter emits light whose wavelength is at the oscillation frequency the water molecules is tuned. Is an aqueous solution between the laser diode and the photodiode of the receiver, the light becomes absorbed by water molecules and does not reach the photodiode or significantly weakened.
  • the function of the device will be described below.
  • the urine flows through the inlet hose 9 in the drip chamber 7, which serves as a pasteursche chamber and ventilated by a vent membrane 18 for pressure equalization.
  • a check valve or return flow check valve 19 through which the urine in this direction unhindered in the buffer reservoir 8 can flow.
  • the buffer reservoir 8 which is also another Ventilation membrane 20, the urine builds up.
  • Exceeds the level a defined level mark here, for example 3 ml
  • this is the level sensor 11 detected and a sensor signal to a switching electronics with integrated Transmit microprocessors.
  • the switching electronics switches the peristaltic pump 10 on.
  • the pump hose 4 in the direction of collection bag 5 - also equipped with a ventilation diaphragm 23 - stripped.
  • the pumping direction is designated by P 2 .
  • the air moves in riser 16, hose adapter 17 and pump hose 4 in the direction of collection bag 5. It forms a negative pressure in the riser 16 through which the urine sucked into the riser 16 and then conveyed through the pump hose 4 into the collection bag 5 will (siphon effect).
  • the hose pump 10 is stopped when the level sensor 11 no longer detects urine and a full 180 ° rotation of the pump head 12 is completed.
  • the number of 180 ° rotations of the pump head 12 is multiplied by the delivery constant k and this value is added to the volumes of the previous pump-down cycles. The total is shown in a display.
  • Is the hose pump 10 defective or the power supply of the electrical Interrupted measuring system is a pumping out of the urine with the peristaltic pump 10 not possible anymore.
  • the connection between the measuring chamber 3 and collecting bag 5 is interrupted and there is a risk that the urine dammed up to the patient and thus interrupted the urine excretion of the patient becomes.
  • an automatic error detection for example by means of special monitoring sensor is not sufficiently reliable or itself Can not fulfill specifications from standards and directives in this way an overflow hose 6 the unimpeded outflow of the pent-up urine in the Ensure collection bag 5.
  • a return flow check valve 21 At the end of the overflow hose 6 is a return flow check valve 21 arranged.
  • the open end of the riser 16 in the buffer reservoir. 8 is completely in the urine and when pumping out no air is sucked. These Requirement must also be met if the measuring system including the measuring chamber 3 is in an inclined position. As shown in FIG. 1, this ends the open end of the riser 16 in a recess 22 of the buffer reservoir 8.
  • This depression 20 is designed so that with an inclination of up to 45 ° no air in the Rising pipe can penetrate.
  • tilt sensors may be provided be the inclination of the measuring system in both horizontal spatial directions measure up. The measured values are evaluated by the switching electronics, which at Exceeding the 45 ° pitch causes an alarm. In addition, the pumping is interrupted by urine.
  • a device which is a disposable article and an investment good, namely the control device, composed.
  • the volume determination The urine is automatically at exactly defined times.
  • the staff does not have to interrupt work begun every hour on the hour, for example, to read the urine level in measuring cups.
  • the volume determination takes place with a very small measuring error, in the case of reading errors omitted by the nursing staff.
  • the elimination rates of the past Hours and, if necessary, days of a patient can be measured by the electronic measuring system get saved.
  • the nursing staff can transfer the data to any one Interrogate time at the control unit.
  • the measured values recorded in the Online operation in a database patient data management system or fluid management system
  • the Handling the system is very easy, and the training required for that Operating personnel can be reduced to a minimum.
  • the costs for the disposable item low and can by function, size, material variety and manufacturing processes are reduced.
  • the system works quietly, so that the patients are not additionally burdened by this.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Urology & Nephrology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
EP04010870A 2004-05-07 2004-05-07 Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine Expired - Lifetime EP1593345B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE502004002955T DE502004002955D1 (de) 2004-05-07 2004-05-07 Vorrichtung zur automatischen Überwachung des Flusses einer Flüssigkeit, insbesondere Urin
ES04010870T ES2282754T3 (es) 2004-05-07 2004-05-07 Dispositivo para la motorizacion automatica del flujo de un liquido, particularmente orina.
EP04010870A EP1593345B1 (fr) 2004-05-07 2004-05-07 Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine
DK04010870T DK1593345T3 (da) 2004-05-07 2004-05-07 Automatisk væskeströmsmonitor, navnlig til urin
AT04010870T ATE354311T1 (de) 2004-05-07 2004-05-07 Vorrichtung zur automatischen überwachung des flusses einer flüssigkeit, insbesondere urin
US11/126,384 US20050247121A1 (en) 2004-05-07 2005-05-06 Urine collection and monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04010870A EP1593345B1 (fr) 2004-05-07 2004-05-07 Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine

Publications (2)

Publication Number Publication Date
EP1593345A1 true EP1593345A1 (fr) 2005-11-09
EP1593345B1 EP1593345B1 (fr) 2007-02-21

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EP04010870A Expired - Lifetime EP1593345B1 (fr) 2004-05-07 2004-05-07 Appareil de contrôle automatique du débit d'un fluide, en particulier d'urine

Country Status (6)

Country Link
US (1) US20050247121A1 (fr)
EP (1) EP1593345B1 (fr)
AT (1) ATE354311T1 (fr)
DE (1) DE502004002955D1 (fr)
DK (1) DK1593345T3 (fr)
ES (1) ES2282754T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053690A1 (de) * 2010-12-08 2012-06-14 EMOTEC Aktiengesellschaft Elektro-, Metall- und Oberflächentechnik Apparatur zur sicheren und hygienischen Entsorgung menschlicher Stoffwechselprodukte von bettlägerigen Personen
CN107632144A (zh) * 2017-11-26 2018-01-26 张延艳 一种用于尿液分析的医疗装置及其使用方法
EP3273864B1 (fr) * 2015-03-25 2023-06-14 Oruba Medikal Teknoloji Arge Ic ve Dis Tic. Ltd. Sti. Dispositif de collection d'un echantillion d'urine

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US8475419B2 (en) 2007-08-25 2013-07-02 Beckersmith Medical, Inc. Automated body fluid drain control apparatus and method
WO2009052498A1 (fr) * 2007-10-18 2009-04-23 Convatec Inc. Système d'aspiration permettant d'éliminer un liquide autre que l'urine et évacué par le corps humain
WO2010141458A2 (fr) * 2009-06-03 2010-12-09 Biometrix Ltd Appareil et procédé pour la collecte au chevet du lit des fluides corporels et la surveillance automatique du volume
CN104771792B (zh) * 2011-08-11 2017-06-20 苏州林华医疗器械股份有限公司 一次性自控精密计量引流袋
CN102865912B (zh) * 2012-09-07 2014-12-10 珠海沃姆电子有限公司 动态尿液监测器及动态尿液监测仪
US11654042B2 (en) * 2015-07-31 2023-05-23 Medivance Incorporated Urine output collection and monitoring system
US11617568B2 (en) 2016-12-29 2023-04-04 Jay K. Joshi Fluid output measurement device and method
US10856792B2 (en) 2018-02-22 2020-12-08 Medtronic, Inc. Urinary symptom management
CN112165970A (zh) 2018-05-22 2021-01-01 C·R·巴德股份有限公司 导管插入系统及其使用方法
WO2020033752A1 (fr) 2018-08-10 2020-02-13 C. R. Bard, Inc. Systèmes automatisés de mesure de sortie d'urine et procédés associés
US11703365B2 (en) 2020-07-14 2023-07-18 C. R. Bard, Inc. Automatic fluid flow system with push-button connection
US11931151B2 (en) 2020-12-22 2024-03-19 C. R. Bard, Inc. Automated urinary output measuring system

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DE3411449A1 (de) * 1984-03-28 1985-10-31 Beerwald, Hans, Dr.Rer.Nat., 5370 Kall Geraet zur automatischen ueberwachung des flusses einer unregelmaessig ausstroemenden fluessigkeit
EP0073156B1 (fr) * 1981-08-21 1986-04-23 Eric G. Leveen Appareil pour la mesure et la réception automatiques de l'écoulement urinaire d'un patient
US5269443A (en) * 1992-11-03 1993-12-14 Condor, Inc. Dosing pump for blending two liquids

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Patent Citations (4)

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EP0073156B1 (fr) * 1981-08-21 1986-04-23 Eric G. Leveen Appareil pour la mesure et la réception automatiques de l'écoulement urinaire d'un patient
EP0109373A2 (fr) * 1982-11-12 1984-05-23 Aktiebolaget Meteve Dispositif pour la mesure d'urine
DE3411449A1 (de) * 1984-03-28 1985-10-31 Beerwald, Hans, Dr.Rer.Nat., 5370 Kall Geraet zur automatischen ueberwachung des flusses einer unregelmaessig ausstroemenden fluessigkeit
US5269443A (en) * 1992-11-03 1993-12-14 Condor, Inc. Dosing pump for blending two liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053690A1 (de) * 2010-12-08 2012-06-14 EMOTEC Aktiengesellschaft Elektro-, Metall- und Oberflächentechnik Apparatur zur sicheren und hygienischen Entsorgung menschlicher Stoffwechselprodukte von bettlägerigen Personen
EP3273864B1 (fr) * 2015-03-25 2023-06-14 Oruba Medikal Teknoloji Arge Ic ve Dis Tic. Ltd. Sti. Dispositif de collection d'un echantillion d'urine
CN107632144A (zh) * 2017-11-26 2018-01-26 张延艳 一种用于尿液分析的医疗装置及其使用方法

Also Published As

Publication number Publication date
ES2282754T3 (es) 2007-10-16
US20050247121A1 (en) 2005-11-10
EP1593345B1 (fr) 2007-02-21
DE502004002955D1 (de) 2007-04-05
ATE354311T1 (de) 2007-03-15
DK1593345T3 (da) 2007-06-18

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